/Engine/Source/Editor/BlueprintEditorLibrary/Public/BlueprintEditorLibrary.h
Replace any references of variables with the OldVarName to references of those with the NewVarName if possible
static void ReplaceVariableReferences ( [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * Blueprint, const [FName](API\Runtime\Core\UObject\FName) OldVarName, const [FName](API\Runtime\Core\UObject\FName) NewVarName )